“Guillermo Padres Elias is worried that Mexican drug cartels will seek a share of the medical marijuana trade in Arizona.  TUCSON — Arizona voters made a mistake in legalizing marijuana for medical use, the governor of Sonora said Friday, at least from his country’s perspective.  ‘I don’t believe in it,’ Guillermo Padres Elias said in response to a question about how the 2010 law might affect the ability of his country to combat the drug cartels.”